<template>
  <el-container class="home-container">
      <!-- 头部区域 -->
      <el-header>
          <div>
              <img src="" alt="">
              <span>宠物之家商家后台</span>
          </div>
          <el-button type="info" @click="logout"> 退出 </el-button>
      </el-header>
      <!-- 主体 -->
      <el-container>
          <!-- 侧边栏 -->
          <el-aside :width="isCollapse ? '64px' : '200px'">
              <div class="toggle-button" @click="toggleCollapse">|||</div>
              <!-- 侧边栏菜单区 -->
                  <el-menu background-color="#333744" text-color="#fff"
                    active-text-color="#409eff" unique-opened :collapse="isCollapse"
                    :collapse-transition="false" router :default-active="activePath">
                      <el-menu-item :index="'/merchant-home/' + item.path" v-for="item in menulist"
                        @click="saveNavState('/' + subItem.path)" :key="item.id">
                        <!-- 图标 -->
                        <i :class="iconsObj[item.id]"></i>
                         <!-- 文本 -->
                         <span>{{ item.authName }}</span>
                    </el-menu-item>
                  </el-menu>
          </el-aside>
          <!-- 主题内容 -->
          <el-main>
              <!-- 路由占位符 -->
              <router-view></router-view>
          </el-main>
      </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
      return {
          // 左侧菜单数据
          menulist: [{
              authName: '员工管理',
              id: 1,
              path: 'employee'
          },
          {
              authName: '商品管理',
              id: 2,
              path: 'product'
          },
          {
              authName: '物流管理',
              id: 3,
              path: 'order'
          }],
          iconsObj: {
              1: 'el-icon-user-solid',
              2: 'el-icon-s-goods',
              3: 'el-icon-s-promotion',
              4: 'el-icon-s-platform',
              5: ''
          },
          // 是否折叠
          isCollapse: false,
          // 被激活的连接地址
          activePath: ''
      }
  },
  created() {
      this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
      logout () {
          window.localStorage.removeItem('merchantToken')
          window.localStorage.removeItem('merchantID')
          this.$router.push('/merchantLogin')
      },
      toggleCollapse() {
          this.isCollapse = !this.isCollapse
      },
      // 保存连接的激活状态
      saveNavState(activePath) {
          window.sessionStorage.setItem('activePath', activePath)
          this.activePath = activePath
      }
  }
}
</script>

<style lang="less" scoped>
  .home-container {
      height: 100%;
  }
  .el-header {
      background-color: #373d41;
      display: flex;
      justify-content: space-between;
      padding-left: 0;
      align-items: center;
      color: #fff;
      font-size: 20px;
      > div {
          display: flex;
          align-items: center;
          span {
              margin-left: 15px;
          }
      }
  }
  .el-aside {
      background-color: #333744;
      .el-menu {
          border-right: none;
      }
  }
  .el-main {
      background-color: #eaedf1;
  }
  .toggle-button {
      background-color: #4A506A;
      font-size: 10px;
      line-height: 24px;
      color: #fff;
      text-align: center;
      letter-spacing: 0.2em;
      cursor: pointer;
  }
</style>
